Hi Daniel, I wanted to check things out on the ground before heading up to the tower. So far it's been a trainwreck! Maybe the distance is an issue.
Thanks, Tim --- In [email protected], daniel haines <ridet...@...> wrote: > > > Why don't you raise the antenna, and get the repeater out of the RF field? > > > > To: [email protected] > From: tahr...@... > Date: Wed, 2 Sep 2009 21:32:35 +0000 > Subject: [Repeater-Builder] Re: Antenna SWR = Desense? > > > > > > Hi Scott, > > The 100' of separation is from the repeater to where the > antenna is located. > > I have a Telewave 6 cavity BpBr duplexer on the system. > > Single feed to one antenna. > > Thanks, > > Tim W5FN > > --- In [email protected], "Scott Overstreet" <scott@> wrote: > > > > Tim--- > > > > I forgot that you spoke of 100' antenna separation. This suggests no > > duplexer and two feedlines. The meat of my story is still good---a corroded > > transmit antenna is capable of making and radiating allot of receive > > frequency noise ---even with between antenna pattern attenuation, there > > might well be enough to desense your receiver. > > > > Scott > > > > ----- Original Message ----- > > From: Scott Overstreet > > To: [email protected] > > Sent: Wednesday, September 02, 2009 1:24 PM > > Subject: Re: [Repeater-Builder] Re: Antenna SWR = Desense? > > > > > > > > Tim > > > > Been there and done that! > > > > My guess is that you have corrosion in the antenna on top. The corrosion > > makes a good wide band rectifier of your transmit power and produces > > sufficient noise at your receive frequency to get back through your > > duplexer > > and into your receiver as desense. Actually, come to think about it, the > > end > > result of the situation is simular to bad LMR-400. > > > > Scott, N6NXI > > ----- Original Message ----- > > From: tahrens301 > > To: [email protected] > > Sent: Wednesday, September 02, 2009 9:56 AM > > Subject: [Repeater-Builder] Re: Antenna SWR = Desense? > > > > > > > > Hi All, > > > > And the winner is..... Door # 2. > > > > Put the 2 meter vertical up on the stick at the end of > > the hard line, & the desense was worse! > > > > Perfect match at the feed line end. > > > > Took dummy load & put on far end of hard line & no desense. > > > > Guess it is the proximity to the antenna. Although about 100', > > guess the RF is getting back into the box. > > > > Gonna set the antenna party for Friday morning. The stuff > > is going up on the tower (unless somebody can see some flaw > > in my logic & can suggest <another> test)! > > > > Thanks again to all! > > > > Tim W5FN > > > > > > > > > > > > ---------------------------------------------------------- > > > > > > > > No virus found in this incoming message. > > Checked by AVG - www.avg.com > > Version: 8.5.409 / Virus Database: 270.13.75/2340 - Release Date: > > 09/01/09 20:03:00 > > > > > > > > > > > > ---------------------------------------------------------- > > > > > > > > No virus found in this incoming message. > > Checked by AVG - www.avg.com > > Version: 8.5.409 / Virus Database: 270.13.76/2342 - Release Date: 09/02/09 > > 18:03:00 > > >
